Printer&#39;s quoin



Aug. 28, 1923.

H. H. HANCOCK PRINTER S. QUOIN Filed Jan. 20. 1922 Invenlor. flariyfl byI Hancoafif.

?atented Aug. 28, 1923.

Lair

HARRY H,HAI\1'COCK, or sW-nnrrsoor'r, MASSACHUSETTS, Ass GNon sAWYEn',OF'LYNN, MASSACHUSETTS. Y

rnrn'rnns eUoIn.

s"tar Application filed January 20, 1922. .Serial N 0. 530,568. 7 i

ToaZZ whom it mag concern:

Be it known that I, -HAnnY H. Hiinoooir, a citizen of theUnited States,residing at Swampscott, in the county, of Essex and State ofMassachusetts, have-invented certain new and useful Improvements inPrinters" Quoins, of which the following is a specification. I r pHeretofore printers quoins have been made in which thequoin comprisestwo side members which areadjustable by Im'ea-ns of a wedge, the sidemembers being provided with 'means for expanding and contracting thequoin' by means .of said wedge,-'and with. means for guiding the sidemembers during the operation ofexpanding or contracting'the quoin. Underthe present in-- vention, one of the objects is to make such a quoin asnarrow as possible, the same being suitably constructed. as to the sidemembers and the expanding screw as to render this possible.Anotherobjeot is to avoidthe necessity of especially constructing thewedge for the purpose of contracting the side mem V bers, this beingaccomplished by the use of suitable springs, which are preferablyconcealed. 0 01101 7] objects are to provide .a printers quoin which iseconomically manu factured, and which isefficient in use.

These beingamong'theobjects of the present invention the same consistsof certain features of construction andcombinations of parts to behereinafter"described,. and then claimed with reference to theaccompanying drawings illustrating a desirable embodiment of theinvention, in which:

v Fig. 1 is a perspective view of the improved quoin; w Fig. 2 is aplan; Fig. 3 is a side elevation; r l Fig. 4: is a plan,-showing thequoin eX- panded; and Y Fig. 5 55, Fig. 3. v v

The side memberslO, 11 of the quo'in are composed of suitable metal, andwhich may be die-cast or otherwise made into blocks or plates ofsuitablethickness. The side members are provided at the lower portions of theirinner faces with inclines 12 at the sides of longitudinal recesses insaid members, and which flare away from each other, and against whichinclined surfaces a wedge 13 is adapted to act.

The wedge 13 is provided with a screw- 1s a transverse section ontheline 16.. The head leis adapted to turn upon the sidemembers 10, 11,and for the purpose of turning 1t it is provided with a preferro HENRY:A.

threaded: opening for receiving a screw-j threaded stem .15 ofai screwhaving ahead ably hexagonal'socket 17, int0 which, -tl1e head of asuitable wrench may "be introduced.

Preferably, as shown, one of the side meme bcrs carries a pin 18,whiletheother side neniber carries a pin 19, said pins being prov dedwith annular, shoulders or flanges 18 ,19 respectively. When the sidemem-- bars are pressed together or contracted, so

that the inner facesthereof'are in contact, .with the. Wedge'initsflowermost, position,

the length of each pin 18., 19 is preferably equal to the combinedwidthsv of the side members. When each side member isprovided with a pinsuch as 1.8, 1 9,:the other side memberis providedwvith a socketfor bore20, whichfis of just such diameter that the annular shoulder 'or flangeonithe pin may. be guided snugly initssocketj The endsfof the pinsopposite the annular sh0u'l-..

.ders or flanges. are driven with a-dr1vefit into suitable holesin theappropriate side member. Coiled. around the "pin '18, .and-

located inthe socket in the side member 11 is. axhelical expansion-spring 21, the ends of'whichbear respectively upon the bottom f thesocket and against the annular shoul- 'der or flange. 18 A helicalexpansion} spring '22 is similarly arranged in the socket 20 of the sidemember 10. 5

' At the midlength of each ide' ember 10,

'11 there is a cavity 23,. which is preferably semi-circulanso astoconform,ito the ciI- cularity offthe head 16 of the adjustingscrew,the wider portions of these cavities meeting when th side members" 10,111 are in contact at their inner faces.

When the side memberslO, 11 are in con tact the cavities 23, 23 form acircular concavity, in; whichthe head 16 of the adjusting screw fitsneatly, said cavities being of' such width transversely of the sidemembers that the head 16 of the adjusting-screw may b as large aspossible, and the width of the side members'when in contact, as narrowas possible. This furnishes an ample bearing" for the head of thescrewnponthe side members and reduces the amount of metal necessary inthe quoin. As the side members width of the cavities 23 in each oft'hern is made as wide as possible, so that the head 16 maybe as largeas possible, it is desirable that theicavitiesbeopen at the outside,sur-- faces. of the'side members, which may be 7 I done by providingopen recesses 24 extending from the cavities through the said silr facesof the sid members.

This further more enables the side members to be made as narrow aspossible, and the head of the screw as" large as" possible. Preferably,the

cavities '23, 23 are of such depth that the head of the screw will becountersunk their hen suitable wrench is inserted in the so i et" 17 inthehead of thescrew and turned in proper direct-ion, the quoin may beexpanded-from its contracted position shown in Fig; 2 to its extremeexpanded position shownV-in- Figd. During'this operation the wedge 13 ismoved upwardly against'the inclined surfaces 12 12 of the side members,

and; the quoin is expanded. i VVhe'n the wrench introduced intothesocket 1'? is turned in reverse direction, the wedge itself does notact to contract the quoin' but the springs 21, 22, which were contractedduring expansion oft-he quoin, will themselves act automatically tocontract the quoin' due to their expansion So that during thecontraction of the quoin the guide means for the side members, assistedby the springs,

will acmaii commct the quoin, for then the adjusting sc'rew" will, beacting to position j the wedge downwardly;-

,In the preferred form shown, it is clear that the iwedge merely acts toexpand'the one anytime other the wedge, -\x-.;

V V thequoin as a whole is exceedingly simplev the side members.

c'fi 'i'oin; while the springs merely act to con- "tract the quoin, bothactions being dependent uponthe'tnrnin'g of the adjusting-screw so thatand c mparatively.inexpensive; This action is made possible because theends of the wedge do not interlock or i'ntere'ngage' with Itis obviousthat the invention is s'usC'epti bleto modification withont' departingfrom the spirit and scope thereof, as defined in j the claims.

i W h at I claim new is:

1. In a printersquoin, the combination of lsidemembers having" inclinedinner faces, 'whicli fiaretowards one side of the quoin, a

wedge bearing, on saidfaces and having a screw-threaded opening, aheaded screw engaged opening, the side members having cavities at theopposite side of the quoin' in which the head of" the screw iscountersunk, and said cavities being open to the two-remaining sidesofithe quoin, and

the screw-head being approximately the width of the side members whenthey are contracted, and guide means for the side members during theirexpansion and contraction. r p '2. In a printers quoin, the combinationof side members having inclined inner faces,

which flaretow'ards thebottom of the quo'in, a wedge bearing on saidfaces and having a screw-threaded opening a headed screw engaged in saidopening and the head bearing on the top of the quoi n' to merely expandit, guide means for the side members during their expansion and}contraction, and

expansion springs arrangedtoact on said guide means to merely force theside mem bers towards e ac'hother when the wedged-s released therefrom,the wedge and. theflside members being" free from interlock orinterengagenient at the ends of the wedge.

- 35 In a printe'rs quoin, the combination of side members havinglongitudinal recesses, a

wedge bearing on the side walls of the rea screw-threaded opening, aheaded screw engaged in said' opening, the side members having cavitiesat the opposite side of the quoin in which' the head of the screw iscountersunk, and said cavities being open to the two remaining sides ofthe quoin and the screw-head being approximately the width of the sidemembers when they are contracted, a g iide pir'i carried by each of saidmembers, said guide-pins having abuts" qu'oi n tlie combination V mentslocated at opposite" sides of the quoin, 7

and each of the members having an enlarged open-ended socket for theabutments to move. 1n, and helical expansion springs around said pins,located in said sockets and seated on the closed ends of said socketsand onfsaid abutments in order to contract said members.

HARRY ii. HANGQGK

